﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp4
{
    class Program
    {
        static void Main(string[] args)
        {
            //5！=5*4*3*2*1
            Console.WriteLine("请输入一个正整数");
            int n = int.Parse(Console.ReadLine());
            string str = "";
            for (int i = n; i > 0; --i)
                str += "*" + i;
            Console.Write(str.Substring(1));
            Console.ReadKey();
        }
        
    }
}
